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https://github.com/kaste/pytest-beds

Fixtures for testing Google Appengine (GAE) apps
https://github.com/kaste/pytest-beds

app-engine google-appengine

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Fixtures for testing Google Appengine (GAE) apps

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Convenience plugin on top of the testbed the Google Appengine (GAE) SDK already provides.

.. image:: https://travis-ci.org/kaste/pytest-beds.svg?branch=master
:target: https://travis-ci.org/kaste/pytest-beds

Install
=======

``pip install pytest-beds``

After that the plugin is enabled by default. You can use specific fixtures (see below) to activate the Testbed and stub specific services.

Options
=======

``--no-gae``
Disable the plugin, esp. do not change the python paths and try to import dev_appserver.

``--sdk-path PATH``
The plugin assumes it can just ``import dev_apserver``. If that fails it looks up the SDK path in the environment variable ``GAE``. Otherwise, you can specify the path to the SDK by using the ``--sdk-path PATH`` option.

``--project-root PATH``
Secondly, the plugin assume that your current path is the projects root folder, t.i. the dirctory which holds the app.yaml. You can specify a different path using ``--project-root PATH``.

``--noisy-tasklets``
By default the plugin shortens the tracebacks when using ndb tasklets, so they don't include the eventloop's internal noise.
Use this switch to make ndb noisy again.

Fixtures
========

The plugin provides fixtures to stub the different services. Usage is therefore simple and straightforward::

# Say, if you create a Foo you hit the database and put some work on queue
def test_foo(ndb, taskqueue):
foo = Foo.create()

assert Foo.query().fetch() == [foo]

List of builtin fixtures::

bed
mailer
channel
urlfetch
memcache
taskqueue
blobstore
ndb
users

Users
-----

There are two fixtures ``anonymous`` and ``login`` to handle the users-stub.

``anonymous``
Prepares the user stub so that ``users.get_current_user()`` will return None

``login``
Prepares the user stub and returns a function to login actual users::

def test_login(login):
# at this point users.get_current_user() will return None

login(id=1, email='foo@gmail.com')
# now users.get_current_user() will return a user

login.logout()
# now users.get_current_user() will return None again

Deferreds
---------

The ``deferreds`` fixture inits the taskqueue stub, but returns a useful object, so you can actually run the deferred functions::

def test_work(deferreds):
deferred.defer(work, 'to be done')

deferreds.consume()

assert 'work has been done'